--- CMakeLists.txt	2023-01-16 02:54:14.000000000 -0500
+++ CMakeLists.txt.new	2023-02-10 23:26:49.042916996 -0500
@@ -606,8 +606,6 @@
         add_definitions(-DWITH_MIMALLOC)
         set(ART_MIMALLOC_VERSION_INFO "V${mimalloc_VERSION}")
     endif()
-else()
-    message(FATAL_ERROR "ART requires the mimalloc library. Please install it (see https://microsoft.github.io/mimalloc/)")
 endif()
 
 if(ENABLE_LIBRAW)
